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US 12,180,144 B2Granted
Diamine compound, polyimide precursor and polyimide prepared by using the same, composition for forming polyimide film and polyimide film prepared by using the same, and uses thereof
AssigneesSK Innovation Co., Ltd., SK ie technology Co., Ltd.
InventorsHyo Shin Kwak, Hye Ri Kim, Jin Hyung Park, Hyun Kyu Cho
Life of this patent
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Abstract
An embodiment relates to a diamine compound, a polymer including a structural unit derived therefrom, a composition for forming a polyimide film including the polymer, and a polyimide film prepared by using the composition. Specifically, the diamine compound according to an embodiment may be very usefully used as a monomer for preparing a polyimide film that is colorless and has an improved mechanical strength.
Claims5
A diamine compound represented by the following Formula 1:
- wherein
- rings A to C are each independently (C6-C20) aromatic rings;
- R1 to R3 are each independently (C1-C10)alkyl, (C6-C20)aryl, (C3-C10)cycloalkyl, halo(C1-C10)alkyl, (C1-C10)alkylcarbonyl, (C1-C10)alkoxycarbonyl, (C6-C20)arylcarbonyl, —SiRaRbRc, —NRdRe, —COOH, nitro, cyano, or halogen;
- R4 to R7 are each independently (C1-C10)alkyl, (C6-C20)aryl, (C3-C10)cycloalkyl, halo(C1-C10)alkyl, (C1-C10)alkylcarbonyl, (C1-C10)alkoxycarbonyl, (C6-C20)arylcarbonyl, (C1-C10)alkoxy, —SiRaRbRc, —NRdRe, —COOH, hydroxy, nitro, cyano, or halogen;
- at least one of R4 to R7 is halo(C1-C10)alkyl, (C1-C10)alkylcarbonyl, (C1-C10)alkoxycarbonyl, (C6-C20)arylcarbonyl, —SiRaRbRc, nitro, or cyano;
- Ra is (C1-C10)alkyl;
- Rb to Re are each independently hydrogen, (C1-C10)alkyl, or (C6-C20)aryl;
- a to c are each independently an integer of 0 to 4;
- and
- d to g are each independently an integer of 1 to 4.
7 more elements
Dependencies are inferred from the claim text.